export default function (self) {
  (function () {
    /**
     * Host information for cross-origin tests.
     * @returns {Object} with properties for different host information.
     */
    function get_host_info() {
      var HTTP_PORT = "{{ports[http][0]}}";
      var HTTP_PORT2 = "{{ports[http][1]}}";
      var HTTPS_PORT = "{{ports[https][0]}}";
      var HTTPS_PORT2 = "{{ports[https][1]}}";
      var PROTOCOL = self.location.protocol;
      var IS_HTTPS = PROTOCOL == "https:";
      var PORT = IS_HTTPS ? HTTPS_PORT : HTTP_PORT;
      var PORT2 = IS_HTTPS ? HTTPS_PORT2 : HTTP_PORT2;
      var HTTP_PORT_ELIDED = HTTP_PORT == "80" ? "" : ":" + HTTP_PORT;
      var HTTP_PORT2_ELIDED = HTTP_PORT2 == "80" ? "" : ":" + HTTP_PORT2;
      var HTTPS_PORT_ELIDED = HTTPS_PORT == "443" ? "" : ":" + HTTPS_PORT;
      var PORT_ELIDED = IS_HTTPS ? HTTPS_PORT_ELIDED : HTTP_PORT_ELIDED;
      var ORIGINAL_HOST = "{{host}}";
      var REMOTE_HOST =
        ORIGINAL_HOST === "localhost" ? "127.0.0.1" : "www1." + ORIGINAL_HOST;
      var OTHER_HOST = "{{domains[www2]}}";
      var NOTSAMESITE_HOST =
        ORIGINAL_HOST === "localhost" ? "127.0.0.1" : "{{hosts[alt][]}}";

      return {
        HTTP_PORT: HTTP_PORT,
        HTTP_PORT2: HTTP_PORT2,
        HTTPS_PORT: HTTPS_PORT,
        HTTPS_PORT2: HTTPS_PORT2,
        PORT: PORT,
        PORT2: PORT2,
        ORIGINAL_HOST: ORIGINAL_HOST,
        REMOTE_HOST: REMOTE_HOST,
        NOTSAMESITE_HOST,

        ORIGIN: PROTOCOL + "//" + ORIGINAL_HOST + PORT_ELIDED,
        HTTP_ORIGIN: "http://" + ORIGINAL_HOST + HTTP_PORT_ELIDED,
        HTTPS_ORIGIN: "https://" + ORIGINAL_HOST + HTTPS_PORT_ELIDED,
        HTTPS_ORIGIN_WITH_CREDS:
          "https://foo:bar@" + ORIGINAL_HOST + HTTPS_PORT_ELIDED,
        HTTP_ORIGIN_WITH_DIFFERENT_PORT:
          "http://" + ORIGINAL_HOST + HTTP_PORT2_ELIDED,
        REMOTE_ORIGIN: PROTOCOL + "//" + REMOTE_HOST + PORT_ELIDED,
        OTHER_ORIGIN: PROTOCOL + "//" + OTHER_HOST + PORT_ELIDED,
        HTTP_REMOTE_ORIGIN: "http://" + REMOTE_HOST + HTTP_PORT_ELIDED,
        HTTP_NOTSAMESITE_ORIGIN:
          "http://" + NOTSAMESITE_HOST + HTTP_PORT_ELIDED,
        HTTP_REMOTE_ORIGIN_WITH_DIFFERENT_PORT:
          "http://" + REMOTE_HOST + HTTP_PORT2_ELIDED,
        HTTPS_REMOTE_ORIGIN: "https://" + REMOTE_HOST + HTTPS_PORT_ELIDED,
        HTTPS_REMOTE_ORIGIN_WITH_CREDS:
          "https://foo:bar@" + REMOTE_HOST + HTTPS_PORT_ELIDED,
        HTTPS_NOTSAMESITE_ORIGIN:
          "https://" + NOTSAMESITE_HOST + HTTPS_PORT_ELIDED,
        UNAUTHENTICATED_ORIGIN: "http://" + OTHER_HOST + HTTP_PORT_ELIDED,
        AUTHENTICATED_ORIGIN: "https://" + OTHER_HOST + HTTPS_PORT_ELIDED,
      };
    }

    /**
     * When a default port is used, location.port returns the empty string.
     * This function attempts to provide an exact port, assuming we are running under wptserve.
     * @param {*} loc - can be Location/<a>/<area>/URL, but assumes http/https only.
     * @returns {string} The port number.
     */
    function get_port(loc) {
      if (loc.port) {
        return loc.port;
      }
      return loc.protocol === "https:" ? "443" : "80";
    }
    self.get_host_info = get_host_info;
    self.get_port = get_port;
  })();
}
